Twice now I've been in a party that has collected all six sprites.... and no water shows up. Once we were able to get it to spawn on the eighth sprite. This latest time, it never spawned.
I have no idea what else we might have done or how to replicate the issue. We did do respawning rocket puppy and totemland only when we had to try the last two sprites.
If'n you need any more info, I'll be happy to provide it if'n I can.
Also, if you find yourself stuck like this, click the ? button in the top left, send in a support request and be a little patient. The GM onduty will be able to help you so you can proceed.
I've seen this a few times too. My current theory is that it happens when you put multiple sprites into the circle without a sufficient delay between them.
So far I haven't experienced it when leaving a gap of 30 seconds or so between depositing each sprite - however it's quite possible that's just luck and the bug is random.
I will confirm Muleus's multiple sprite theory. If two knights are standing in the circle holding cursed sprites, when one drops a sprite, both sprites get cleansed, but it only counts as one sprite.
:o People don't do all the rooms?
F2 when happens.... not much else could be used to track whats happening under the hood.